The U.S. military has admitted that American troops raided the embassy of Sudan in the Iraqi capital.

On Wednesday, Sudan summoned the top U.S. diplomat in Khartoum and protested the raid.

In a statement Thursday, the U.S. military in Baghdad acknowledged that U.S. soldiers entered Sudan's embassy on January 13 to search for insurgents.

The statement says U.S. troops requested entry from guards at the embassy. Sudan closed its Baghdad embassy last year.

Meanwhile, Iran's ambassador to Iraq says he has been told that five Iranians detained by U.S. forces last week will be released soon. The ambassador told reporters Thursday that he received the news from Iraq's foreign minister, Hoshyar Zebari.

On January 11, the U.S. military raided an Iranian office in Irbil in northern Iraq, detaining five Iranians it said were involved in arming Iraqi insurgents.

Iranian Ambassador Hassan Kazimi said the detention of Iranians on Iraqi soil was an insult to Iraq's government. He said other countries will reconsider sending diplomats to Iraq.

Iran says the five Iranians are diplomats who were engaged in legal activity. Iraqi and U.S. officials have not confirmed that the Iranians are to be released.